configuration management and the cloud week 4

Practice Quiz: Building Software for the Cloud

1. What is latency in terms of Cloud storage?

  • The measure of how many reads or writes you can do in one second, no matter how much data you’re accessing.
  • The amount of data that you can read, and write in a given amount of time.
  • The amount of time it takes to complete a read or write operation.
  • The time delay between an input and output.

2. Which of the following statements about sticky sessions are true? (Select all that apply.)

  • All requests from the same client always go to the same backend server.
  • Sticky sessions maintain an even load.
  • They should only be used when needed.
  • They can cause problems during migration.

3. If you run into limitations such as rate limits or utilization limits, you should contact the Cloud provider and ask for a _____.

  • Beta version
  • Quota increase
  • A/B test
  • Blob storage solution

4. What is the term referring to everything needed to run a service?

  • Environment
  • Provisions
  • Utilization limits
  • Continuous integration

5. What is the term referring to a network of hosts spread in different geographical locations, allowing ISPs to be as close as possible to content?

  • Domain Name Service
  • Continuous Deployment
  • Platform as a Service
  • Content delivery network

6. What is a Service Level Agreement?

  • An agreement between the user and developer.
  • A strict commitment between a provider and a client.
  • An agreement between service providers.
  • A guarantee of service quality.

7. What is the most important aspect of an alert?

  • It must be actionable.
  • It must require a human to be notified.
  • It must require immediate action.
  • It must precisely describe the cause of the issue.

8. Which part of an HTTP message from a web server is useful for tracking the overall status of the response and can be monitored and logged?

  • A triggered alert
  • The data pushed back to the client
  • Metrics sent from the server
  • The response code in the server’s message

9. To set up a new alert, we have to configure the _____ that triggers the alert.

  • Condition
  • Metric
  • Incident
  • Service Level Objective (SLO)

10. When we collect metrics from inside a system, this is known as ______ monitoring.

  • White-box
  • Black-box
  • Network
  • Log

11. Which of the following are valid strategies for recovery after encountering service failure? (Select all that apply.)

  • Switching to a secondary instance.
  • Setting up monitoring and alerts.
  • Restoring from backup.
  • Performing a rollback to a previous version.

12. Which of the following concepts provide redundancy? (Select all that apply.)

  • Having a secondary instance of a VM.
  • Having a secondary Cloud vendor.
  • Having automatic backups configured.
  • Performing a rollback.

13. If you operate a service that stores any kind of data, what are some critical steps to ensure disaster recovery? (Select all that apply)

  • Implement automated backups
  • Use redundant systems wherever possible
  • Test backups by restoring
  • Never delete old backups

14. What is the correct term for packaged applications that are shipped with all needed libraries and dependencies, and allows the application to run in isolation?

  • Rollback
  • Secondary instance
  • Containers
  • Disk Image

15. Using a large variety of containerized applications can get complicated and messy. What are some important tips for solving problems when using containers? (Select all that apply)

  • Use extensive logging in all parts
  • Reduce the number of containers
  • Reuse container configurations
  • Use test instances

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